import { Attachment } from "./constants";
import { Notifier } from "./notifier";
import { EventUnion, NotifyUnion } from "./sfu-extended";
export declare class AttachmentsTransferClient {
    #private;
    constructor(notifier: Notifier<EventUnion, NotifyUnion>, attachment: Attachment);
    downloadAttachment(url: string): Promise<Attachment>;
    disconnect(): Promise<void>;
}